CAJ | 학술논문

本研究选择了58只母羔(38只单羔、20只双羔)，分别于初生、断乳、6月龄、周岁时采取皮肤样品，采用横切和纵切连续切片法，在皮脂腺水平上观测皮肤毛囊群结构及毛囊性状发育规律。结果表明：云南半细毛羊皮肤毛囊群结构为三元型，毛囊群呈长椭园形，皮脂腺较发达，毛囊较少弯曲，生长方向一致。毛囊性状初生时与断乳、6月龄、周岁时差异极显著(P<0.01)，其余各年龄段间除皮肤厚度和真皮层厚差异显著(P<0.05)外，其余差异都不显著，说明毛囊性状在断乳(4月龄)时已基本稳定，断乳时的毛囊性状即可代表周岁时的毛囊性状。初生、断乳、6月龄、周岁时的皮肤总毛囊数(个/mm2)分别为47.44±7.73、29.00±6.49、29.29±6.42和29.79±6.07，S/P值分别为3.52±0.91、6.00±1.13、6.63±0.95和7.39±1.26。单双羔在毛囊发育上有不同，这种差别差异不显著，但数量上的差异一直持续到断乳。
본연구선택료58지모고(38지단고、20지쌍고)，분별우초생、단유、6월령、주세시채취피부양품，채용횡절화종절련속절편법，재피지선수평상관측피부모낭군결구급모낭성상발육규률。결과표명：운남반세모양피부모낭군결구위삼원형，모낭군정장타완형，피지선교발체，모낭교소만곡，생장방향일치。모낭성상초생시여단유、6월령、주세시차이겁현저(P<0.01)，기여각년령단간제피부후도화진피층후차이현저(P<0.05)외，기여차이도불현저，설명모낭성상재단유(4월령)시이기본은정，단유시적모낭성상즉가대표주세시적모낭성상。초생、단유、6월령、주세시적피부총모낭수(개/mm2)분별위47.44±7.73、29.00±6.49、29.29±6.42화29.79±6.07，S/P치분별위3.52±0.91、6.00±1.13、6.63±0.95화7.39±1.26。단쌍고재모낭발육상유불동，저충차별차이불현저，단수량상적차이일직지속도단유。
The skin specimens taken from 58 sheep at birth,weaning,sixmonthand one year of age were cut serially on the horizontal and vertical direction.The morphological structure and the follicle traits were observed and evaluated at sebaceous gland level.The follicle traits include primary follicle density,secondary follicle density,total follicle density,ratio of secondary to primary follicle(S/P),primary fiber diameter,secondary fiber diameter,mean diameter,skin thickness and derma thickness(mm).The results showed that the follicle groups generally consisted of three primary follicles with a varying number of secondary follicled and were oval-shaped with abundant sebaceous gland and fewer curl.The skin construction and the follicle traits are significant different between birth and other three age groups,however,there was no significant differexe (P>0.05)among weaning,six-month and one year of age,suggesting that the skin follicle traits were completely developed at the weaning age (four-month).The toatl follicle density (Per mm)at birth,weaning,six-month and one year of age was 47.44±7.73，29.00±6.49，29.29±6.42 and 29.79±6.07 respectively;The ratio of secondary to primary follicle(S/P) was 3.52±0.91，6.00±1.13，6.63±0.95 and 7.39±1.26 respectively.There was no significant difference between singles and twins in the development of skin follicle except the follicle number before weaning.